Originally Posted by SlamFire
"Restoration" generally screws up the value in any antique firearm. Clean it up with solvent, cloth, oil and leave it alone.
Colt Mod. 1878 Frontier. Your gun was mfg'd in 1884. 12200 to 13699.
+1. Do a little research before you do anything. Factory letter might
be a good idea. If you want to try your hand at "restoration", buy
an old Iver Johnson top-break or two and have at it. Don't start
on a old Colt!
For a real restoration, check out Doug Turnbull Firearms. Be prepared
for some sticker shock---properly done it isn't cheap.